import React from 'react'
import {Outlet,NavLink,Link} from "react-router-dom"

/* 
 
*/
export default function Main() {
  return (
    <div>
    <div className="row">
      <div className="col-xs-offset-2 col-xs-8">
        <div className="page-header"><h2>React Router Demo</h2></div>
      </div>
    </div>
    <div className="row">
      <div className="col-xs-2 col-xs-offset-2">
        <div className="list-group">
          {/* <Link className="list-group-item active" to="/main/about">About</Link>
            <Link className="list-group-item active" to="/main/home">Home</Link> */}

            {/* 
               Link 组件可以进行路由跳转,  里面书写一个 to 属性 ,可以指向某一个路由地址
               Link 最终会转变为a标签


               NavLink 组件可以进行路由跳转,  里面书写一个 to 属性 ,可以指向某一个路由地址
               会自动帮我们添加 active 类名  进行样式转换
            */}
            
          <NavLink className="list-group-item" to="/main/about">About</NavLink>
          <NavLink className="list-group-item" to="/main/home">Home</NavLink>
        </div>
      </div>
      <div className="col-xs-6">
        <div className="panel">
          <div className="panel-body">
            <Outlet/>
          </div>
        </div>
      </div>
    </div>
  </div>
  )
}
